Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41505099 |
| 马铃薯干旱致灾过程中阈值响应及其生理机制 | |
| 赵鸿 | |
| 主持机构 | 中国气象局兰州干旱气象研究所 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 210000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Around the key scientific problem of process from drought occurrence and development to disaster formation in potato, based on a field simulation experiment about the effect of progressive drought stress on potato, we try to investigate the formation process and threshold of drought disaster and physiological change mechanism of potato. In this study, the experiment on potato suffering from water stress will be carried out at Dingxi, Gansu Province, where is the main producing areas of potato in China. Six different water stress treatments will be designed under Rainout Shelter - Water Trough plots. The variation on soil moisture, physiological parameters, plant morphology and yield will be monitored during progressive soil drought. Our aims are: 1) investigate the variation on plant morphology and physiological parameters with the soil moisture decreasing during progressive soil drought, as well as their relationships; 2) determine the threshold of physiological parameters and soil moisture of potato by means of crop physiology ecology mutation characteristics and optimum partitioning clustering method, and reveal the photosynthetic physiological mechanism of threshold formation and changes; 3) determine the soil moisture range from physiological parameter mutation to yield beginning to decline, establishment threshold classification of soil drought based on physiological parameters. In this way, we will quantitatively describe the process of drought-induced disaster in potato. The results will provide some important theoretical knowledge on the drought monitoring and disaster prevention or mitigation in the main producing areas of potato in semiarid region. |
| 中文关键词 | 马铃薯 ; 干旱致灾过程 ; 阈值 ; 生理机制 |
| 来源机构 | 中国气象局兰州干旱气象研究所 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346869 |
| 推荐引用方式 GB/T 7714 | 赵鸿.马铃薯干旱致灾过程中阈值响应及其生理机制.2016. |
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